I could imagine Creation is like a great big movie.
And anyone who was in that movie, whether first scene or last, nonetheless was in that movie!
And that's all of us.
And Adam couldn't say he was before Peter, or any of us.
The only date to count by is the release date of the movie, and in that light, we are all as old as Adam.
That is, if we see ourselves as part of God's Creation and not as an individual, separate entity.
Anyway, I just cancelled my pension that I would be able to get in about 5 years time.
I think God is going to wrap this whole thing up in days rather than years. ( but i advise no-one - only He knows the day! )
When the last egg has hatched, there really is no reason to sit on the nest anymore!